Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6680585 | Method and apparatus for modulating HID ballast operating frequency using DC bus ripple voltage | — | 2004-01-20 |
| 6680587 | Electronic ballast with adaptable charge pump power factor correction | Joseph L. Parisella, Richard Koeppl | 2004-01-20 |